Looking to play around a bit with the new PaaS app platform.

I don’t see any concept of a “release phase” (see heroku) where one would typically trigger things like database migrations, and cancel the new code being released if it fails.

I could include in the run command (migrate + run) but it’s not clear from the docs how that would behave if multiple containers tried to execute it at the same time, or what would happen if it fails.

What is the recommended approach for doing database migrations like this?